renamed links in left hand side.
change `start` and `stop` in show page.
- added label to keyword field
- change description to conversation description
increase padding in conversation wizard page.
fixed #476, removes assign to group.
fixed #479, navigation changes.
placed commented out html into django blocks.
Merge branch 'develop-frontend' into feature/issue-473-rename-conversation-states
Merge branch 'feature/issue-473-rename-conversation-states' into develop-frontend